subnet.im

AS137436Cong Pengbo

ChinaRegistryAPNIC

As of 12th November 2026, AS137436 (Cong Pengbo), a network registered in China with APNIC, originates 5 IPv6 prefixes. It is seen behind 2 upstream networks, most often AS153185 (Wang Dehong) and AS139317 (Ningbo Dahuamao Information Technology…). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

0

IPv6 prefixes

5

IPv4 addresses

0

IPv6 /64s

328k

Upstream graph

The networks AS137436 is seen behind, one and two hops out, drawn from real AS paths.

AS137436Toward the internet core
Upstream graph for AS137436: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS137436Cong PengboThis networkAS139317Ningbo Dahuamao I…AS153185Wang DehongAS6939Hurricane Electri…AS199310XIN BING XIANAS20473The Constant Comp…

Networks observed one and two hops upstream of AS137436 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS137436
NetworkCountryRelationshipPathsVantage pts
AS153185Wang DehongCNPeer25263
AS139317Ningbo Dahuamao Information Technology Co LtdCNPeer6464

Prefixes

The largest blocks AS137436 originates, widest first.

Largest prefixes originated by AS137436
PrefixAddressesVisibility
2406:840:fc20::/4865.5k × /6463/64
2406:840:fc21::/4865.5k × /6463/64
2406:840:fc22::/4865.5k × /6463/64
2406:840:fc23::/4865.5k × /6463/64
2406:840:fea6::/4865.5k × /6464/64

Routing health

How AS137436's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid100.0%5
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%5
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 5 prefixes

  • /4865.5k × /64100.0%5

Recent changes

Announcements that started or stopped since 13th Oct 2026.

No announcement by AS137436 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.